Mass communications

Basin Visual Estimation Techniques (BVET) was used to estimate abundance for fish populations in small streams; these methodologies were adopted by numerous government agencies for monitoring stream biota. The studies stated that lack of bed control structures, variability in flow regimes, and lack of consistency among observers created difficulties in assessing habitat in using BVET methods.

Journey to disaster

Article Abstract:

The cause behind the explosion of the Challenger space shuttle on 28 January 1986, which left its launch pad in California, is explored. The reason behind this disaster was a faulty fuel seat on one of its rockets.